Frequencies for first 10,000 rows of durstr variable in ther2014q2 dataset :

   (Mostly) |
    Numeric |
   value of |
        the |
   duration |
(length) of |
    therapy |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,989       99.89       99.89
          1 |          2        0.02       99.91
        122 |          1        0.01       99.92
          2 |          2        0.02       99.94
          3 |          4        0.04       99.98
          4 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 6 Apr 2017